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Carbohydrates
D(+)-Fucose (6-Deoxy-D-galactose), min. 99%
€83.55*
D-Fucose (6-Deoxy-D-galactose) may be used for different purposes.
1. In studies of fucoidan polysaccharide containing glycans.2. D-Fucose is used as a substrate to identify, differentiate and characterize enzymes such as the fucosidase(s), l-fucose isomerase(s) and L-fucose dehydrogenase(s).3. D-Fucose may be used to study organelles, bacterial microcompartments, involved in the degradation of plant and algal cell wall sugars.4. D-Fucose may be used as a reference compound in rare sugar identification and analysis.
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L-Fucose (6-Deoxy-L-galactose), min. 98%
€185.66*
L-Fucose CAS 2438-80-4 (6-Deoxy-L-galactose) may be used for different purposes.
1. In studies of fucoidan polysaccharide containing glycans.2. L-Fucose is used as a substrate to identify, differentiate and characterize enzymes such as the fucosidase(s), l-fucose isomerase(s) and L-fucose dehydrogenase(s).3. L-Fucose may be used to study organelles, bacterial microcompartments, involved in the degradation of plant and algal cell wall sugars.4. L-Fucose may be used as a reference compound in rare sugar identification and analysis.5. A more and more important role of fucose, is within the biopharmaceutical industry and, specifically, the production of monoclonal antibodies (mAbs). Antibody-dependent cell mediated cytotoxicity (ADCC) is the primary mechanism of action for many therapeutic monoclonal antibodies. The cytotoxic effect of the mAbs is more or less based on the portion of fucose of the N-linked glycans. The exact amount of fucose must be detected quickly and unambiguously while production. Pure fucose can serve as a standard for this purpose.
D-Galactosamine x HCl
€127.21*
Galactosamine is a hexosamine derived from galactose with the molecular formula C6H13NO5. This amino sugar is a constituent of some glycoprotein hormones such as follicle-stimulating hormone (FSH) and luteinizing hormone (LH). Other sugar constituents of FSH and LH include glucosamine, galactose and glucose.
D(+)-Galactose from lactose (min. 98.0% HPLC)
€160.76*
€271.56*
€92.90*
€1,087.61*
€40.79*
Galactose is a monosaccharide. When combined with glucose (monosaccharide), through a condensation reaction, the result is the disaccharide lactose. The hydrolysis of lactose to glucose and galactose is catalyzed by the enzymes lactase and β-galactosidase. The latter is produced by the lac operon in Escherichia coli.
In nature, lactose is found primarily in milk and milk products. Consequently, various food products made with dairy-derived ingredients, e.g. breads and cereals, can contain lactose. Galactose metabolism, which converts galactose into glucose, is carried out by the three principal enzymes in a mechanism known as the Leloir pathway.
In the human body, glucose is changed into galactose via hexoneogenesis to enable the mammary glands to secrete lactose. However, most lactose in breast milk is synthesized from galactose taken up from the blood, and only 35±6% is made from galactose from de novo synthesis.
Variants from €40.79*
Variants from €40.79*
Variants from €40.79*
Variants from €40.79*
D(+)-Galactose from beech (min. 98.0% HPLC)
€52.27*
Highly pure D(+)-Galactose derived from beech. Guaranteed free of any animal contaminants!
D.(+)-Galacturonic acid monohydrate (>98% by titration)
€1,035.15*
€293.55*
€180.25*
Galacturonic acid (GalA) is the primary building block of mainly pectin but also other biopolymers found in plants. The polymeric GalA chains in pectin, are linked by alpha-1,4 glycosidic bonds. Some of the carboxyl groups are methylated and exist as methyl esters. The molecular mass of pectins reaches 200,000 g/mol and more.
Pectin is found mainly in plant walls. It is particularly abundant (≈30 wt%) in citrus peels, but is also extracted from apples, spinach, sugar beets, and other fruits and vegetables. It is mainly used as a gelling or filling agent in foods such as jellies, jams, desserts and sweets, and as a stabilizer in juices and milk-based beverages.
Variants from €180.25*
Variants from €180.25*
L-Glucose, min. 99% (HPLC)
€106.48*
L-(−)-Glucose is an enantiomer of the more common D-glucose. L-Glucose cannot be used by cells as an energy source because it cannot be phosphorylated by hexokinase.
Glycogen from Oyster
€89.38*
Glycogen is used to precipitate nanograms of DNA very efficiently. Mainly used if nucleic acids are precipitated with 0.5M ammonia-acetate and iso-Propanol.
Ref.: Sambrook J., & Russel D.W. (2001) Molecular Cloning: A Laboratory Manual, 3rd Edition, p. 5.20, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY.
Hyaluronic acid sodium salt
€68.27*
Hyaluronic acid (HA) also called hyaluronan, hyaluronate is an anionic, nonsulfated glycosaminoglycan distributed widely throughout connective, epithelial, and neural tissues. It is unique among glycosaminoglycans in that it is nonsulfated, forms in the plasma membrane instead of the Golgi, and can be very large, with its molecular weight often reaching the millions. One of the chief components of the extracellular matrix, hyaluronan contributes significantly to cell proliferation and migration, and may also be involved in the progression of some malignant tumors.
Lactulose crystal. (min. 99.0% HPLC)
€80.34*
ß-D-Galp(1->4)-D-fruc, 4-O-β-D-Galactopyranosyl-D-fructose